667345116789 has 16 divisors (see below), whose sum is σ = 1064710158400. Its totient is φ = 410673917808.

The previous prime is 667345116769. The next prime is 667345116799. The reversal of 667345116789 is 987611543766.

667345116789 is a `hidden beast` number, since 6 + 6 + 7 + 34 + 511 + 6 + 7 + 89 = 666.

It is not a de Polignac number, because 667345116789 - 2¹¹ = 667345114741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667345116769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950633719 + ... + 950634420.

It is an arithmetic number, because the mean of its divisors is an integer number (66544384900).

Almost surely, 2^667345116789 is an apocalyptic number.

It is an amenable number.

667345116789 is a deficient number, since it is larger than the sum of its proper divisors (397365041611).

667345116789 is a wasteful number, since it uses less digits than its factorization.

667345116789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901268161 (or 1901268155 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 667345116789 in words is "six hundred sixty-seven billion, three hundred forty-five million, one hundred sixteen thousand, seven hundred eighty-nine".